Srimad Bhagavatam Canto 01, Chapter 13, Text 57

SB 1.13.57

sa va adyatanad rajan
paratah pañcame ’hani
kalevaram hasyati svam
tac ca bhasmi-bhavisyati
 
Translation by His Divine Grace A. C. Bhaktivedanta Swami Srila Prabhupada: 
 
O King, he will quit his body, most probably on the fifth day from today. And his body will turn to ashes.
 
Purport by His Divine Grace A. C. Bhaktivedanta Swami Srila Prabhupada: 
 
Narada Muni’s prophecy prohibited Yudhisthira Maharaja from going to the place where his uncle was staying because even after quitting the body by his own mystic power, Dhrtarastra would not be in need of any funeral ceremony; Narada Muni indicated that his body by itself would burn to ashes. The perfection of the yoga system is attained by such mystic power. The yogi is able to quit his body by his own choice of time and can attain any planet he desires by turning the present body into ashes by self-made fire.
Srimad Bhagavatam Canto 01, Chapter 13, Text 56
Srimad Bhagavatam Canto 01, Chapter 13, Text 58